Double Loop Energy-Saving Control for Single-Effect LiBr/H2O Absorption Refrigeration System

Given the problem that the single closed-loop control strategy commonly used in the absorption refrigeration system can only meet the refrigeration capacity demand but cannot guarantee the system's high-efficiency operation, a double loop energy-saving control strategy for the single-effect LiBr/H
2
O absorption refrigeration system is proposed. By establishing the system's energy consumption model, the coupling characteristics between the system parameters are analyzed, and the system optimization constraints are also putting forward. Taking the system's highest overall energy efficiency as the optimization objective, a particle swarm optimization algorithm is used to optimize the system working point on line according to the system operating conditions and load demand to realize the system's energy-saving operation. The simulation results show that in comparison with the single closed-loop control scheme, the double loop energy-saving control strategy proposed in this paper can improve the system's total energy efficiency by 19.3% under 60% load conditions.